Object Spawning

To spawn an object. Make sure the object is in the spawnable prefabs array. Then simply instantiate the object. And invoke the spawn method on the NetworkedObject component that should be attached to the prefab. This should only be done on the server as the object will automatically replicate on the other clients. The object is owned by the server by default.

Here is an example on how to spawn a object (with server ownership)

GameObject go = Instantiate(myPrefab, Vector3.zero, Quaternion.identity);

The .Spawn() method takes 2 parameters, both with default values, so they are optional.

public void Spawn(Stream spawnPayload = null, bool destroyWithScene = false);

The first parameter is a System.IO.Stream and can be retrieved in the NetworkStart() to sync values once when spawning this object. Note however, that the payload data is only avalible for people that get the spawn call straight away. People that join later on won’t get the payload data.

The second parameter speaks for itself. If set to true, the object will be destroyed on scene switching. This can only be set inside the spawn call.

Spawn with Ownership

Any changes to the Ownership can only be done after calling .Spawn() and are not instantly available. To spawn an object directly with a certain ownership use SpawnWithOwnership(ulong clientId) instead of the default spawn method.

Scene Objects

Any objects already on the server with NetworkedObject components (static scene objects) will get automatically replicated.

There are two modes that define how scene objects are spawned. The first mode is PrefabSync. It can enabled in the NetworkConfig.


If PrefabSync is disabled, the MLAPI will use SoftSync. This allows scene objects to be non prefabs and they will not be replaced, thus keeping their serialized data. This mode is recommended for single project setups. This is the default since MLAPI 6.


If it’s enabled, every scene object has to be a prefab and scene objects are recreated on the client side. This means that serialized data gets lost on the clients. It’s thus recommended to place serialized data in NetworkedVars. This mode is ONLY recommended for Multi project setups. This was the default before MLAPI 6.